Recommendation for an easy build kit for an E or F motor

Discussion in 'Mid Power Rocketry (MPR)' started by Jerry Thompson, Nov 22, 2019.

Help Support The Rocketry Forum by donating:

  1. Nov 22, 2019 #1

    Jerry Thompson

    Jerry Thompson

    Jerry Thompson

    Member

    Joined:
    Nov 17, 2019
    Messages:
    15
    Likes Received:
    4
    Gender:
    Male
    I am an old lapsed rocketeer who now has grandkids interested and I have some old ProDyne motors I would like to build around. The Cyclone motor has a 1 inch motor diameter and varies in length and probably is in the low E category The Hurricane motor is 1.125 inch in diameter and also has various lengths and might be in a high E or Low F range. I am not looking for ultimate altitude just want to see how they perform. Being that they are old engines I didn't want to invest a lot of time or money in case they don't work. ProDyne motors.JPG

    Image above shows some of my supply with a an Estes D 24mm for comparison
     
  2. Nov 22, 2019 #2

    DAllen

    DAllen

    DAllen

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    4,347
    Likes Received:
    306
    So really you need a rocket with a 29mm motor mount. If you have the capabilities to make centering rings I'd say a trip to Hobby Lobby is in order. An Estes Big Daddy goes for $20 but you'll have to find an appropriate sized MMT tube and modify the centering rings. Great rocket for those sized motors. '

    If you want to spend a little more with less fuss then LOC Precision is your answer. They have a few rockets that would fit the bill like the 1.65" Aura.

    There are other cheaper options out there I am sure but those were the simplest that came to mind for me.
     
  3. Nov 22, 2019 #3

    Jerry Thompson

    Jerry Thompson

    Jerry Thompson

    Member

    Joined:
    Nov 17, 2019
    Messages:
    15
    Likes Received:
    4
    Gender:
    Male
    Thanks for the suggestion, I'll look into it. I figured I'd have to make or modify a motor mount tube and centering ring. I am a little concerned about the weight of the motor making the CG a bit lower on the rocket so wanted something with generous sized fins.
     
  4. Nov 22, 2019 #4

    Initiator001

    Initiator001

    Initiator001

    Well-Known Member

    Joined:
    Jan 19, 2009
    Messages:
    2,772
    Likes Received:
    59
    I would recommend any of the smaller AeroTech kits. They are designed for E-F-G motors and have many nice features which makes them easy to build and fly.

    The current versions of all the kits accept motors of various lengths.
     
  5. Nov 22, 2019 #5

    DAllen

    DAllen

    DAllen

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    4,347
    Likes Received:
    306
    You know another REALLY simple option is just get a spool. One with 6-8" diameter plates on the ends or so. You can even get away without recovery because those usually tumble really well and if they aren't too delicate and aren't landing on pavement they'll be fine.
     
    gfunk likes this.
  6. Nov 22, 2019 #6

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,462
    Likes Received:
    521
    http://www.artapplewhite.com/free/index.html
    Along the same vein are saucer rockets. This website has instructions for building it yourself out of your own materials. They’re actually a lot of fun, very cheap to build, so you don’t lose much if your engine CATOs

    http://www.artapplewhite.com/free/index.html
     
    DAllen likes this.
  7. Nov 22, 2019 #7

    Jerry Thompson

    Jerry Thompson

    Jerry Thompson

    Member

    Joined:
    Nov 17, 2019
    Messages:
    15
    Likes Received:
    4
    Gender:
    Male
    Interesting suggestions. Thanks
     
  8. Nov 22, 2019 #8

    Donnager

    Donnager

    Donnager

    Well-Known Member

    Joined:
    May 29, 2019
    Messages:
    46
    Likes Received:
    15
    Gender:
    Male
    For cheap, (<$30) I'd get an Estes Star Orbiter, Majestic (<$50), or Super Big Bertha (<$40). All have a 29mm motor mount. Should handle E's or small F's with a little fin reinforcement, and the Majestic will need something to seal the top of the fins. They will go pretty high, though. If you want a little better, get an Aerotech kit (Mustang, Cheetah, etc.). The Aerotech kits are pretty nice, and should last a while.

    In the odd rocket line, I believe Rocketarium has a Turbo Vortico ($25) that will fly on 29's also.
     
  9. Nov 22, 2019 #9

    MikeyDSlagle

    MikeyDSlagle

    MikeyDSlagle

    Well-Known Member

    Joined:
    Dec 17, 2013
    Messages:
    2,053
    Likes Received:
    145
    LOC Onyx, Graduator, Hi-Tech, or Wi Roc would work well. Easy to build, affordable,and tough.
     
  10. Nov 22, 2019 #10

    prfesser

    prfesser

    prfesser

    Lifetime Supporter TRF Lifetime Supporter

    Joined:
    May 7, 2017
    Messages:
    752
    Likes Received:
    474
    Location:
    Murray, KY
    Balsa Machining has a 3" "School Rocket" for $23. Cardboard airframe but should be adequate for F and G motors. It has a 24 mm motor mount, so you'd need a piece of 29mm motor tube, and open up the centering rings.
    https://www.balsamachining.com
     
  11. Nov 22, 2019 #11

    rharshberger

    rharshberger

    rharshberger

    Well-Known Member

    Joined:
    Oct 13, 2014
    Messages:
    8,470
    Likes Received:
    821
    Gender:
    Male
    Location:
    Pasco, WA
    or just buy a set of CR52H-300's and a stick of BT52H-34, when you purchase the 3" School rocket.
     
    dhbarr likes this.
  12. Nov 22, 2019 #12

    kuririn

    kuririn

    kuririn

    BARGeezer TRF Supporter

    Joined:
    Oct 3, 2016
    Messages:
    2,589
    Likes Received:
    658
    Gender:
    Male
    Location:
    Hawaii
    Apogee Aspire: https://www.apogeerockets.com/Rocket-Kits/Skill-Level-2-Model-Rocket-Kits/Aspire
    Suitable for 29mm E, F, and G motors.
    Use 1/4" tape to build up a rear thrust ring on the end of each motor.
    Install motor and do a tape wrap around the end of the rocket body and motor to prevent motor kick-out at ejection.
    Since the Cyclone is a smaller dia. need to either build up the dia. with tape or use a ST-10 tube (from erockets) as a motor tube and sleeve fit to the 29mm motor tube.
    If the motors CATO you're only out $22.
    If they work you'll get a wild ride and your grandkids will be stoked.
    Hope you get it back.;)
     
  13. Nov 22, 2019 #13

    Jerry Thompson

    Jerry Thompson

    Jerry Thompson

    Member

    Joined:
    Nov 17, 2019
    Messages:
    15
    Likes Received:
    4
    Gender:
    Male
    Wow! what a lot of great suggestions now time to decide.
     
  14. Nov 22, 2019 #14

    Nytrunner

    Nytrunner

    Nytrunner

    Master of Rivets

    Joined:
    Oct 15, 2016
    Messages:
    5,269
    Likes Received:
    1,148
    Gender:
    Male
    Location:
    Huntsville AL
    Question: High high do you want it to go? (Ie, how long do you want to chase it coming down?)

    The 3" school rocket will keep it nicely in range. The Apogee aspire will have you squinting
     
  15. Nov 22, 2019 #15

    Scott_650

    Scott_650

    Scott_650

    Well-Known Member

    Joined:
    Sep 16, 2015
    Messages:
    389
    Likes Received:
    70
    If you contact the folks at BMS they’ll substitute the 29mm parts. They also have an optional payload/e-bay section.
     
  16. Nov 22, 2019 #16

    Joekeyo

    Joekeyo

    Joekeyo

    Forum Supporter TRF Supporter

    Joined:
    Sep 12, 2019
    Messages:
    40
    Likes Received:
    7
    Gender:
    Male
    Location:
    Sun City Center, FL
    I am building an Estes Magician. It is an easy build. The payload fits an Altimeter 2 exactly. Estimated altitude is 1600 feet.
     
    ewomack and BRS Hobbies like this.
  17. Nov 22, 2019 #17

    Nytrunner

    Nytrunner

    Nytrunner

    Master of Rivets

    Joined:
    Oct 15, 2016
    Messages:
    5,269
    Likes Received:
    1,148
    Gender:
    Male
    Location:
    Huntsville AL
    Fantastic rocket, very slick.
    I suggest a smaller chute than included, or a streamer. Otherwise, have fun hiking after it
     
  18. Nov 22, 2019 #18

    K'Tesh

    K'Tesh

    K'Tesh

    OpenRocket Chuck Norris

    Joined:
    Mar 27, 2013
    Messages:
    12,920
    Likes Received:
    457
    24mm? Estes Cherokee E or or Vapor
    29mm? Star Orbiter
     
  19. Nov 23, 2019 #19

    caveduck

    caveduck

    caveduck

    semi old rocketeer

    Joined:
    Jun 6, 2011
    Messages:
    1,223
    Likes Received:
    69
    BMS 29mm school rocket for the win, best value out there and sturdier than Estes kits.
     
  20. Nov 23, 2019 #20

    dhbarr

    dhbarr

    dhbarr

    Amateur Professional TRF Supporter

    Joined:
    Jan 30, 2016
    Messages:
    5,726
    Likes Received:
    610
    Apogee Aspire on a streamer is probably a good bet here, since you can't really count on correctly guessing the thrustcurve or delay.

    Tape up to match the 29mm tube and keep the weight down IMO.
     
  21. Nov 23, 2019 #21

    Jerry Thompson

    Jerry Thompson

    Jerry Thompson

    Member

    Joined:
    Nov 17, 2019
    Messages:
    15
    Likes Received:
    4
    Gender:
    Male
    I want something that will stay within site so modest altitude would be my preference. The suggestions I am getting are overwhelming but appreciated.
     
  22. Nov 23, 2019 #22

    dhbarr

    dhbarr

    dhbarr

    Amateur Professional TRF Supporter

    Joined:
    Jan 30, 2016
    Messages:
    5,726
    Likes Received:
    610
    If you're going for low altitude, you can skip the Apogee Aspire :)
     
  23. Nov 23, 2019 #23

    Jerry Thompson

    Jerry Thompson

    Jerry Thompson

    Member

    Joined:
    Nov 17, 2019
    Messages:
    15
    Likes Received:
    4
    Gender:
    Male
    yes I had
     
    dhbarr likes this.
  24. Nov 24, 2019 #24

    ewomack

    ewomack

    ewomack

    Forum Supporter TRF Supporter

    Joined:
    Jul 9, 2019
    Messages:
    196
    Likes Received:
    65
    I second, or third, the Estes Magician. It's an easy build and comes with a fin alignment tool that's so awesome you'll have to try to misalign your fins. I made it a little more complicated by painting it 2/3 purple with a small silver stripe between the purple and white areas and by altering the bottom piece of the payload bay, but that's my fault. Honestly, I find the out of the box design a little bland, but the rocket itself flies incredibly well.

    I flew it on an Estes D engine and strapped a key chain camera to it, but I've heard such nasty things about Estes E engines that I'm hoping to use some of the alternatives suggested on this forum.

    Here is my Magician's flight:
     
    Last edited: Nov 24, 2019
    BABAR and Tyler P like this.
  25. Nov 24, 2019 #25

    Scott_650

    Scott_650

    Scott_650

    Well-Known Member

    Joined:
    Sep 16, 2015
    Messages:
    389
    Likes Received:
    70
    Mercury Engineering has some very nice looking kits with 29mm motor mounts - they’re a sister company of Balsa Machining. http://mercury-rockets.com/
     
  26. Nov 24, 2019 #26

    kuririn

    kuririn

    kuririn

    BARGeezer TRF Supporter

    Joined:
    Oct 3, 2016
    Messages:
    2,589
    Likes Received:
    658
    Gender:
    Male
    Location:
    Hawaii
  27. Nov 24, 2019 #27

    Scott_650

    Scott_650

    Scott_650

    Well-Known Member

    Joined:
    Sep 16, 2015
    Messages:
    389
    Likes Received:
    70
    In the enthusiast car world it’s TAIAM - the answer is always Miata. In the rocketry world it’s becoming TAIASO - the answer is always Star Orbiter :rolleyes:
     
  28. Nov 24, 2019 #28

    kuririn

    kuririn

    kuririn

    BARGeezer TRF Supporter

    Joined:
    Oct 3, 2016
    Messages:
    2,589
    Likes Received:
    658
    Gender:
    Male
    Location:
    Hawaii
    While I do endorse Mercury engineering ( I have the Grave Danger ) the OP doesn't want to spend too much money on something that might go Boom. Hence the SO.
     
  29. Nov 24, 2019 #29

    neil_w

    neil_w

    neil_w

    When in doubt, add more rocket TRF Supporter

    Joined:
    Jul 14, 2015
    Messages:
    6,690
    Likes Received:
    986
    Location:
    Northern NJ
    The Star Orbiter is great, but how exactly is that "keeping it low and in sight" on an F motor? Need something bigger and heavier (or at least draggier) to stay within reasonable bounds on an F.

    Regarding Mercury Engineering: add that to the list of rocket vendors I never knew existed. Are they actually still in business? That's a pretty old-looking website, and I've never heard anyone mention them before.
     
  30. Nov 24, 2019 #30

    kuririn

    kuririn

    kuririn

    BARGeezer TRF Supporter

    Joined:
    Oct 3, 2016
    Messages:
    2,589
    Likes Received:
    658
    Gender:
    Male
    Location:
    Hawaii
    They're a subsidiary of BMS. Their website went dark a little while ago:
    https://www.rocketryforum.com/threads/mercury-engineering-kaput.147628/
    But they're back up now. Nice kits.
    The Star Orbiter I launched went up on a 24mm composite E with adapter, approx. 1400 ft. apogee.
    Recovered within the confines of our small(ish) park.
    Main thing, it's cheap.;)
     

Share This Page